Windows 10 -- I have been told by tech support that there is no way to delete - not hide but literally delete -- staves in a region only. Also, if I delete the barlines in a region the default rests are still there. I can hide them individually, but it would be nice if I could hide -- or better still delete -- all of them at once just as you can delete notes, rests, etc. in a whole region with "Clear all". I would like to see this feature added.